Digital Pressure Gauge for Differential Pressures for High Accuracy

上海仪舶实验室自动化 25-01-23 16:42:50

Digital Pressure Gauge for Differential Pressures for High Accuracy

The DPGM409 digital differential pressure gauge from OMEGA incorporates a rugged 316SS enclosure designed for marine and washdown applications with a precision 0.08% accuracy pressure transducer and 316L SS wetted parts and body. The result is a digital pressure gauge that is extremely durable.

This differential pressure digital gauge functions perfectly with hydraulic oil, air or water as well as several other fluids.

Hi and lo alarms standard

Easy to read 25 mm backlit LCD display

5-Point NIST traceable calibration

Wet/wet differential pressure measurement

High 0.08% accuracy

MIN/MAX/AVG reading

Bar graph on display

IP65 (NEMA-4X) enclosure

Battery powered with extended battery life

G¼ pressure connections standard - others available

User selectable analogue output 0 to 5 Vdc, 0 to 10 Vdc or 4 to 20 mA

Wireless transmitter option sends reading to remote location and comprises of charting and data logging software

Specifications

The key specifications of the DPGM409 digital differential pressure gauge are as follows:

Accuracy (Combined Linearity, Hysteresis and Repeatability): ±0.08% BSL

Storage Temperature: -40 to 82 °C

Operating Temperature: -18 to 66 °C

Thermal Effects (Over Operating Range):

  • Zero Balance:
  • Ranges 25 mb to 70 mb: ±1% span

  • Ranges >70 mb: ±0.5% span

  • Span Setting:
  • Ranges 25 mb to 70 mb: ±1% span

  • Ranges >70 mb: ±0.5% span

    Minimum Resistance Between Transducer Body and Any Wire: 100MO @ 50 Vdc

    Pressure Cycles: 1 million minimum

    Long Term Stability (1-yr.): ±0.1% FS typical

    Analogue Output: User selectable 0 to 5 Vdc, 0 to 10 Vdc or 4 to 20 mA (external 24 Vdc power supply required).Set jumper to Select Current or Voltage: Software selection of 0 to 5 Vdc, 0 to 10 Vdc, or 4 to 20 mABidirectional ranges have a unidirectional analogue output equal to their full span; i.e. -15 to +15 psi = 0 to 10 Vdc.Analogue output is independently scalable

    Analogue Output Cable: 2.7 m with ferrite core (included)

    Analogue Output Accuracy: 0.08% typical (0.15% maximum in RF field @ 10V/m)

    Line/Static Pressure: 500 psi maximum applied to both sides simultaneously

    Proof Pressure (differential):

  • 25 mb: = 10 times range

  • 70 mb: = 6 times range

  • 170 mb to 50 Bar: = 4 times range

    Hi-Side Containment Pressure (Differential):

  • 25 to 350 mb: To 1000 psi

  • 1 to 50 bar: To 3000 psi

    Display: 4-digit LCD with user Selectable backlighting, (9999 count) 25 mm character height

    Sample/Display Range: User selectable from 0.38 to 30 seconds (preset to 1/second)

    Computer Interface: USB connection for set-up, cable included

    Pressure Connection: G ¼ male

    Power: One 3.6V lithium 8.4 Ah capacity (C cell) included (two included with wireless option) (replacement battery model no. BATT-C-3V)

    Battery Life (Typical): Up to 4-years

    Enclosure Material: 316 Stainless Steel and ABS centre gasket

    Enclosure Finish: Electropolished

    Enclosure Environmental Rating: Weatherproof, IP65

    Sensor Wetted Parts: 316L stainless steel

    Dimensions:

  • Display: 115 D x 89 W x 74 mm H

  • Sensor: 72 to 89 mm L below display, 80 mm wide

    Weight: 1 kg typical depending upon configuration

    Front Panel Functions:

  • Backlight: Manually turns backlight on/off

  • Min/Max: Recalls min/max values

  • Zero/Clear: Zeros display or clears min/max

    Software Settings (via USB)

    Update Rate: 4 options, 10, 5, 2, 1 times per second

    Units: psi, inHg, inH2O, bar, mbar

    Lock: Allows the lock-out of front panel functions

    Alarms: User selectable “High” and “Low” alarm limits (open collector)

    Backlight: On/Off, 10 seconds, 30 seconds, 1 minute, 5 minute

    Wireless Transmitter (Optional): Channel number, transmission rate, alarms, sensor offset, chart recording, data logging

    Calibrate: Zero and Span

    Overrange Indication: “_ _ _ _”

    Wireless Option Specifications

    Transmit Sample Rate: User programmable from 1 sample/2 min to 1 sample/2 sec

    Radio Frequency (RF) Transceiver:

  • Carrier: ISM 2.4 GHz

  • RF Output: 10 dBm (10 mW)

  • Range of RF Link: Up to 120 m outdoors (line of sight); Up to 40 m indoors/urban

    Included Software: Requires Windows® 7 (32 bit); XP, Vista

    Data Transmission to Host: Pressure reading, ambient temperature reading, RF transmit strength and battery level

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